Heat medium relay unit and air-conditioning apparatus including the heat medium relay unit

a relay unit and heat medium technology, applied in lighting and heating apparatus, refrigeration components, heating types, etc., can solve the problems of poor efficiency, further deterioration of installationability, and leakage of refrigerant within the room, so as to reduce the effect of reducing the heat insulator or sealing material and facilitating production and maintenan

Active Publication Date: 2018-06-19
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design reduces the need for heat insulators and sealing materials, simplifying production and maintenance, increasing installation flexibility, and enabling efficient air-conditioning system application in various buildings by effectively managing dew condensation and water leaks within the unit.

Problems solved by technology

In the air-conditioning apparatus described in Patent Literature 1, since the refrigerant is circulated to the indoor units, there is a possibility that the refrigerant leaks within the room.
Thus, a water circulation path becomes long, and energy consumption such as water sending power is higher than that of the refrigerant, so that the efficiency is poor.
In addition, in an air-conditioning apparatus such as a waste heat recovery type chiller, in order to allow cooling or heating to individually be selected for each indoor unit, the outdoor unit and each indoor unit have to be connected to each other via four pipes in total, and thus the installability further deteriorates.
In addition, in the case where these devices are individually installed, installation spaces, maintenance spaces, and an operation of connecting pipes which connect these devices to each other, an operation for heat insulation, and the like are required, so that the installability deteriorates.

Method used

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  • Heat medium relay unit and air-conditioning apparatus including the heat medium relay unit
  • Heat medium relay unit and air-conditioning apparatus including the heat medium relay unit
  • Heat medium relay unit and air-conditioning apparatus including the heat medium relay unit

Examples

Experimental program
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Effect test

embodiment 1

[0033

[0034]FIG. 1 is an overall structure diagram of a heat medium relay unit 100 according to Embodiment 1 of the present invention. First, the configurations of functional components of the heat medium relay unit 100 will be described. The heat medium relay unit 100 of Embodiment 1 includes heat exchangers 1a, 1b, 1c, and 1d, secondary heat medium sending devices 2a and 2b, and a secondary heat medium flow path switching device 3 as functional components. These functional components are provided in a casing 100a. As shown in FIG. 1, the heat medium relay unit 100 is provided between an outdoor unit 11 and an indoor unit 12, and has a function of supplying heating energy or cooling energy generated by the outdoor unit 11, in response to a request from the indoor unit 12.

[0035](Heat Exchangers 1a, 1b, 1c, and 1d)

[0036]The heat exchangers 1a, 1b, 1c, and 1d serve to exchange heat between a primary heat medium such as refrigerant which is sent from the outdoor unit 11, and a secondary...

embodiment 2

[0110

[0111]FIG. 13 is a schematic circuit configuration diagram showing an example of the circuit configuration of an air-conditioning apparatus (hereinafter, referred to as air-conditioning apparatus A) according to Embodiment 2 of the present invention. The detailed configuration of the air-conditioning apparatus A will be described based on FIG. 13. The air-conditioning apparatus A includes the heat medium relay unit 100 according to Embodiment 1. In Embodiment 2, the difference from Embodiment 1 will be mainly described, the same portions as those in Embodiment 1 are designated by the same reference signs, and the description thereof is omitted.

[0112]As shown in FIG. 13, in the air-conditioning apparatus A, the outdoor unit 11 and the heat medium relay unit 100 are connected to each other by refrigerant pipes 54 via an intermediate heat exchanger 71 and an intermediate heat exchanger 72 provided in the heat medium relay unit 100. In addition, the heat medium relay unit 100 and e...

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Abstract

In a heat medium relay unit, a drain pan is configured to have width and depth dimensions larger than dimensions of an outer shell of a heat medium relay unit main body. The outer shell includes side panels, upper frames, lower frames, and an upper end surface, the position of which is higher than those of upper end surfaces of the lower frames.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is a U.S. national stage application of International Application No. PCT / JP2013 / 065208 filed on May 31, 2013, the disclosure of which is incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to a heat medium relay unit which is used in an air-conditioning apparatus typified by, for example, a multi-air-conditioning apparatus for a building and exchanges heat between two media, and an air-conditioning apparatus. In particular, the present invention relates to a heat medium relay unit having a casing structure that takes an installation environment of the heat medium relay unit into consideration, and an air-conditioning apparatus including the heat medium relay unit.BACKGROUND ART[0003]For example, an existing multi-air-conditioning apparatus for a building circulates refrigerant between an outdoor unit which is a heat source unit installed outside a building and indoor units installed within ...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): F28F27/00F24F3/06F24F13/22F25B39/00F25B39/02
CPCF25B39/00F24F3/065F24F13/222F25B39/02
InventorNISHIOKA, KOJIMOTOMURA, YUJISHIMAMOTO, DAISUKEMORIMOTO, OSAMU
OwnerMITSUBISHI ELECTRIC CORP